I have been making my living for over 30 years working on motorcycles and doing machine work and enjoy this hobby, I glade to help. I just got done Friday showing a guy how to sealing an engine told him that one was free and the next one was on him. I am sure he will not have any problem with the next one doing it him self.

LRP .28 is a very good engine like all engines made by SH. Now on the spec 3 if you notice most are out of stock and have been for a while I have heard a roomer there was a problem with them but do not know this for fact. Then XTM 457 is the same thing as the LRP 28 spec 2. SH makes engines for quite a few different companies and for the most part are very good engines. I now a few years back SH had some problems but think most where fixed. Still wish I could fine out more about the spec 3 if there have been any problems with it.