been messing around with these since I was little but never been too serious about them. starting to get into a little more since i moved to norcal and have so many nice parks near by. my silly little question is I can't seem to keep my chain tight on my hoffman 900. the rear wheel is held tight by the pegs and two washers on the outside of the frame. should there be a washer inside the frame and one outside the frame? should I try some lock washers? i'll post a pic to get some views, here's my other toy:
![](http://dfinn.homeunix.com/pics/84gti/rabbit_airport.jpg)