27.2 Upgrade problems

[Bigger the Better]

Anyone else have a problem with the bolts for the ignition coil being too long from your stock CY23cc. It only made sense to me after thinking about it, the bore is larger leaving less to tap but you would think it would be advertised or new bolts supplied so you don't run into a snag.
Old bolts - 23cc head:

Old bolts - 27.2 head:


I also noticed that the head bolt on the side needed to be filed down due to the space on the one side of the head not being wide enough. You can see where the bolt still rubbed the fin even after filing.

 

[todd217]

i think my 29cc had the same problem. but its been along time since i installed it.