I recently bought an AW four gear and after close inspection I noticed the top plate is very sloppy not at all the the AFXs. Is there a way to tighten the top plate using basic tool which a person may have at home?
I was talking about the gear in the very rear. I wish it was an isolated defect out of the people I race with there are at least to four like that out of about 10 -12 car. Not a very good ratio. I've never had a problem with the original AFX four gears.
Oh ok. I'm guessing you're having a little gear-slipping. First, check the axle's crown gear and see if any teeth are damaged. If that's not the case, you may need a couple gentle taps of a punch on the rivet that holds the rear gear.
If skipping is the problem, I'm more suspicious of the crown gear clearance and the condition of it's teeth. While sloppy cluster rivets are an important issue, I've not had the greatest luck with the stock AW crown gears made from Playdoh. Wobbling clusters have been around since the birth of the design but the use of playdoh in crown gears has only occurred just recently.
Admittedly I havent had an AW four gear on my bench yet, but I've seen tons of AFX and that type of chassis with skeeeezing gears and it's not ALWAYS the rivet. Like most stuff, it's more-n-likely a little of both.
If it's a mesh problem one can always get nylo shims to quickly solve the problem ...or...hunt and peck another gear that has a bit more shoulder.