So i just got this bike. 1983 honda vt750c. Changed out old oil and filter. Rebuilt starter with a brand new starter rebuild kit and bought a brand new battery. The engine turns by spinning the rear tire and if you take out at least 2 of the plugs the starter will turn engine. The second you have all plugs in, the starter cranks for almost a turn and then stops. Then cranks almost a turn and stops never actually turning the engine like its suppose to. Iv also tried adding a teaspoon of oil into plug holes but same results. Tried a wire straight to starter with same results. Cleaned all contacts from ground to battery positive and negative. Jumped solenoid with no different results. Im curious what my next step should be. I dont want to buy a new starter unless i have to. Battery shows 13.2 volts. Any suggestions at where to go next would be very welcomed.