i own a 426 and the bottom oil drain bolt has been taped out soooo many times that next time it strips i need all new casing and the dealer said its over $1000 for it but $2000 with labour, i like that bike and ive already put $2000 into but is it worth selling the way it is or should i get the new casing and still own it??? Is it too big to helicoil back to the original bolt size? Why the heck does it keep getting stripped in the first place?? P.S. I use an oven on low for 5-10 minutes just hot to the touch and a can of duster upside down to freeze/remove bearings... they fall right out. When i put them in i freeze the bearings and warm the cases... drop them in and and all is good. May not be yamaha recomended, but it requires no force, banging or pulling.