Hello all, I was on the forum a few months ago and was having a problem with my mower. Thanks to you, I found out there was a recall on my B&S ELS 500 motor (16.5hp?) and took it to the dealer to have the compression relief valve replaced because it burned up 3 starters. This is NOT a commercial mower and it has a total of 230 hrs on it! I really like the mower itself, and it has a commercial duty steel deck on it. The overall build of it is very good. The motor...... Sucks. I am trying to decide if I should take it back in or just ditch it, and buy a new motor.? I am not very happy with the motor. 16.5hp isn't enough for this mower with a 38"? deck.(3 blades) I have very thick grass and it isn't enough to really cut through it very well. I'm not concerned with speed. Should I bite the bullet and buy a new motor? or take it back again? IF I go with a new motor, what should I be looking at? Vertical mount? Is there a special bolt pattern that will only fit my mower, or will just about any motor fit? I'm thinking a 20hp will be an acceptable size motor for me. I will be aerating/rolling/slit seeding in the fall, and would like a little more hp to help pull these. I have 1/2 acre of grass to cut and the cut is excellent and perfectly level-the motor is like the little engine that could-or could not.....hahahaha Thanks for any opinions you may offer. (I bought the mower for $1,000). I figure if I dump another $1,000 in the motor I could potentially have a pretty nice mower.?