What car is this on? Did you already replace one side or are you just starting with one side and it's not cooperating? Either way, once the engine is on the mount it should settle slightly.

Every now and then I'll loosen the other side to give me a bit more room to play with, it'll also let me shimmy the engine side to side a bit to seat the mount in place. I can't help but think I started doing this because if there was an old collapsed mount on one side, I'd have trouble putting a mount in on the other.

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Allen Kroliczek
Oak Grove Autosport | Oak Grove Autosport
01 G500, 82 300TD, quite a few more.....