Mitsubishi Repair Problems? Ask a Mechanic for Answers ASAP
If the engine is off do you still have difficulty entering reverse or does it go in easily with the engine not running?
It looks like we missed each other.If the shifter is hard to get into reverse while the engine is off too, then that would only leave an internal issue with the transmission (damaged synchronizer ring, damaged gear, bent fork etc).If the shifter goes into reverse when the engine is off without any significant effort, then we are going to be looking back into the clutch job... the only expected cause for that behavior would be the clutch not fully disengaging.If this is the case, I would check your pedal operation to make sure nothing looks unusual under the dash (nothing bent etc). If all looks well I would check your slave cylinder operation and make sure you have decent throw of the piston to move the fork... if it only moves a small amount, look for leaks. If no leaks are found, try bleeding the system out for air, and if still no improvement then consider replacing the master cylinder (do not use aftermarket for that part though).
If there is normal throw of the slave piston, then that would only leave a prematurely failed clutch.