I am putting an airsal kit on my 1991 tomos A-3, and i noticed that i was going to have to bore out the connecting rod hole. is this dangerous to do? With the hole bored out will there still be some brass in the bushing left or will there be none, and will it hurt the wrist pin if there is not bushing when it is bored out? how many peple have put airsal kits on their A-3's? It doesn't seem like its gonna be hard i just need to know acouple things.