I wonder how on earth i can get some sti shifters on my bike without spending a fortune. I have a seven speed freewheel so i think that means i need a seven speed shifter right? but those are impossible to find nowadays. I was wondering if i could put an eight nine or ten speed shifter on there if i just adjust the stops right? or maybe i could replace the freewheel but would i be able to put a 9 speed freewheel on that hub? Or am i going to have to go ahead and replace the rear wheel? any suggestions?