My 2015 Schwinn Corvette 7-spd has very tall gearing. I replaced the standard 46t chainring with the smallest I could find (43) that is compatible with a 3/32 chain, that didn't help much. I've looked everywhere for a smaller (36-40) chainring but the teeth are too wide (1/8) or the spindle hole is too small (such as for bmx), or both. On the other end of the drivetrain, no one seems to offer a genuine wide range freewheel. The Shimano Mega-range just has a larger first gear than is standard on the bike, leaving a huge gap between first and second gear. Having essentially four unusable gears seems kinda dumb, this isn't the kind of bike that one rides mostly downhill at high speed. Has anyone else addressed this issue? Thoughts and suggestions are appreciated.