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Old 11-27-2013, 04:05 AM
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Strato50
 
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You can often manage to wiggle the sprocket around the scraper without much difficulty, just be careful and patient.

It might even help to unscrew the gearbox from the tank floor BEFORE attempting to remove the drive sprocket. That way you can give it a little bit more room to wiggle around. It's tricky but do-able.

The metal wheels split in 2 halves and might be easier.

If you're running a STOCK plastic KV-1, remember you need LONG SHAFT gearboxes if you're going to use the same plastic drive sprockets.