Schwinn High Sierra refresh, insanely fun bike

I found an 18" High Sierra earlier this year that ended up going to my wife because it was too small for me. I was crazy jealous but somehow lucked out on a larger size that popped up on marketplace recently. Just finished putting it back together and it's such a fun bike! Looking forward to getting it on some trails. It's in great shape but I don't think it had been cleaned since the 1980s. The cassette was seized on like nothing I've ever seen. Kept mostly original parts with new pads, cables, etc. Homemade leather strip grips and a knockoff leather saddle that's surprisingly decent. Slowly getting better at rollercam adjustment after two High Sierras…