firstly, reinstalling won't help... it never does unless you've got some file corruption and if that's the case, you have bigger problems to deal with...
it sounds to me like you're simply running into the p-factor... it is the twist of the engine and newton's law that causes this... the engine is twisting one way and the craft is going to try to twist the other way... equal and opposite reaction and all that rot... if the engine were to spin the other direction, the craft would be going off to the right... so the ""fix"" is to apply some rudder to keep the craft as straight as you can... on some joysticks, that's a twist of the stick...
yes, i also agree with others that you need to keep your speed up and maybe reduce your climb rate... IIRC 700feet/sec is good until you reach altitude... maybe 900f/s at sea level but that'll have to be reduced as you gain altitude... i forget my numbers for taking the c172p to max ceiling but starting at 700-900f/s climb with full throttle and then reducing the climb rate until max ceiling took roughly 30 minutes to get there... that was leaving KSFO, turning to 90degrees and climbing out... it would put you at max ceiling before you got to the mountains...
FWIW: i generally ""cheat"" by setting the AP's altitude to my target and as soon as i get off the ground, i enable the AP so it keeps my wings level and maintains my climb rate... it takes the climb rate as what the rate was when you turned the AP on... once it is on and the wings are leveling out, then i work on the climb rate setting and lastly i use the heading bug to steer my course... that's the basics and it gets me into the air where i can dance with the angels as i like
"You get more air close to the ground," said Angalo. "I read that in a book. You get lots of air low down, and not much when you go up."
"Why not?" said Gurder.
"Dunno. It's frightened of heights, I guess."