I would like to change the front and rear sprockets to a 17/34 or 17/35 set up for lower highway rpm since I do a bit of highway driving. 1.) Does anyone see any immediate issues with this? 2.) I can't find a 34T rear, but I can find a 17/35 setup from an '82 400 Maxim. Will this fit? The bolt pattern is the same but I haven't looked up the chain size from the Maxim. Thanks!