I have a 727 61" Grasshopper. THe engine is turning 3670 with blades running no load. As your are mowing the engine seems to not pull good when it needs to. I run High Lift blades. THe grass I was mowing is not very tall. You have to slow down or the engine bogs down. IS the 27hp a little small for the front mount setup?? I run a 227 GH basically same mower and it pulls and runs good. THe 227 does not turn anywhere close to the 3670 rpms. Its more in the 3400 range. What could be the problem with the Front Mount??????????