Locking in the rear on a TRF201

[BloodClod]

Hi guys, where I run my TRF201 the dirt track conditions can vary quite a bit. Medium to better grip days the car really goes well but when it gets loose the rear end can be a bit of a handful when powering out of corners.

Any suggestions on how to lock the rear in more in such conditions? I'm currently running the optional 1 degree rear hubs for more toe-in.

Thanks in advance.