I just drilled a hole into the aluminium bit of the truck
I second JB weld. When my motor mount came loose when I lazily used gorilla glue, I tried JB weld. It pretty much hardens like a cement. Very solid. I noticed a very slight increase in vibration but that maybe from something else I changed (components in enclosures).
I used Epoxy and it didn’t stick and just broke off☹️ So I got the bolts and drill the truck
Enertion mounts are a PITA to adjust the belt tension. Wouldn’t buy them again.
You may want to have a look at randal trucks, they seem to be less tapered compared to paris, but I have not tried them myself.