[chrisguyw]

Got it...I missed the earlier reference to providing a new chassis.

Even if not replacing the chassis, and, if your rules allow, converting a "clamshell" into a separate body/chassis is a very useful modification, as it it is much easier to get, and adjust movement between chassis/body.

Here is a "Clamshell" Scaley Ferrari P4 I did for a club member ages ago,....this was done after the gears/wheels bushings etc. etc. were done and it did make a noticeable  difference,.......looks a ton better too !!

Cheers
Chris Walker