GREEN CHASSIS WEIRDNESS
Using a green ultra-hard chassis, the holes for the top Axle-grubs were tight and useful – for M2 allen grubs.
BUT the Bottom holes were so loose, I had to carefully drill a hole large enough for a 4-40 (the typical NSR grub screw) and installed the brass upgrades. CAUTION there is barely enough ‘meat’ in this area to allow the 4-40s. This was only My experience and fix; “your mileage may vary”; “caution – coffee is hot and should not be placed between your thighs”; “don’t take stellara if you are allergic to stellara”.
ESSE TURN CLIMB – the climb-out likes to porpoise the car out of the slot when entering the back ‘straight’. A 1/2-mm to 1-mm flying gap with a slight bit of axle slop seems to prevent the Pop-out. 3/4 to 7/8 mm was the range my particular car seemed to “like”.
I also added a 3 gm lead disk behind the guide.
"... get on your bad motor scooter and ride!"
Sammy with Montrose