Part of the catch here is what the OS RG does best. It makes low end power. If you run the JP-2, JP3 or .053 Dynamite Platinum pipe you are comming in at just around $200 for your engine system.
The Dynamites are clones of Novarossi/RB .063 - .053 and .086. They have been modified with an improved stinger so it won't fold over in a crash. The pipe and header is about $59 and they are beautiful.
Any of these combinations will pull a heavier clutch with no problem due to the torque.
A lot of guys try and run the clutch too soft and it slips. Then they try to tune it in with the carb. Motor gets hot and they blame it on the motor.
Run a clutch setup that will engage solidly and if you have to, drop a tooth on your clutch bell.
The motor will run cool and if it is like my setup, everyone will swear you are running a highly modified motor.
You will get about 8 - 8 1/2 minutes of run time in races at 240 - 250 degrees.
What are you running it in????