I took my Fun Factor out today and I was not getting any serious acceleration anymore. It is bogging down like it does not want to move. I have to have it full throttle before it will start to go. Here is what I have doe since the last time I drove it. Oh and this was orginally a Fun Factor ATX.

new clutch bell w/ pinions 14/17
New Stock Magnum tires
Aluminum Brake Seat
New pullstart

Could it be the weight of the new Magnum tires causing this or something else

Also I had the Proline Moab tires on there prier but had to get wider tires cause I could not make sharp turns without flipping my truck and the truck didn't bog down like it does now.

Oh I also forgot it will not hit second gear anymore either