Yes, this. You have everything you need, spend thousands, and now one metric piece of hardware you need isn’t sold locally because they are all Freedom Unit Fucktards and you have to order it from China and wait another month because of a $1 part
Yes, and drilling into a brand new deck, especially a nice one like a Powell Peralta 1980s Reissue. Although I’ve gotten better at that. It doesn’t bother me as much any more
Finishing it… I love building! Riding it is sone of the fun. But building it is the best part
Rebuilding. I try new stuff, I get all happy because I had to jump through a dozen hoops to do something and then it sucks.
Totally agree!! so very frustrating when you modify your setup because 'It will be better!!" spend a bunch of money and then its just ehh and you know you should just revert to the old setup.
allining the motor mount, pulleys and belts because I never get it straight and it takes a lot of time
Soldering and fitting everything into the enclosure.
Winter. Winter is my least favourite part of building.
it´s the best time to build…the worst time to drive… if not prepaired right.
I thought it´s gonna be a long boring winter.
now i´m waiting the snow to come back to have some fun with studded wheels or snow chains.
and the nice thing on the winter, you can push your vesc to the totall max of your battery output limit… last time i was driving, the pcb temperature was higher on the beginning or the ride than when i came home 
i don´t like that i don´t have enough time for all i want to build and also not always all tools i would need, besides i can´t say i don´t like anything… ok ok… crimping jst pins even with a crimping tool sucks…
I wouldn’t dare to ride with all the road/sidewalk salts. RIP bearings, motors, etc.
ask @b264 how he is riding all year through…
and who says to ride only on the road 
90% of my rides are where definitly no salt is laying 
A set of new bearings after the winter i think i can afford too and sealing the motors take over the rest of the problems.
The big problem i have in the winter… my girlfriend don´t let me to come into our flat with a board full of snow
I have a similar issue.
I ride it off in the basement (parking garage) then after I get on the elevator, I ride down the carpeted hallway on my floor to dry the wheels off.
how often you change bearings during one winter season?
Whenever they get stiff and squeaky. Last winter I had to hammer one bearing off the axle. It all depends. They can be fine for months then there’s one nasty spot that full of salt and water and I hit it just right and it gets everything then within a couple days the bearings start going to trash. It’s worse if you set the board down and don’t ride it. If you keep riding it, it seems to be not be quite as bad, but still bad.
My least favorite part of building is my job. Well, at least the part where I spend most of my precious building time working in an office making money, instead of in a garage spending money and building stuff.
Mine is figuring out how to mount all electronics under the board and find an enclosure for them
When you finally receive the last part but then you realize you are still mising one part. One part from fucking China. And that just keeps happening…
Ohh yea another one. When trying to put a build together everything just gets AT LEAST 25% more expensive because I live in EU.
Don’t worry, know the feeling, just got slapped 30% on the Unity. 
These forums