I don't have much experience with anything smaller than a .21 but when I was breaking mine in the manual said to keep the temp at about 180F for 3 tanks at idle and then at around 200F for 2 more tanks driving at different speeds and never winding it out. Mine is also a Reedy 121vr but it was done with the heat cycle method and it's been running strong for the last 2 gallons and alot of pinch and when it's tuned the temp is between 260F - 280F but my vspec race tune temp was 210F and that was broken in using the heat cycle method and I sold it at almost 6 gallons with no problems with pinch or the tune.