I got the 4.1 RTR about a 6 weeks ago and its doing well, indeed

The stock RTR shocks are mediocre, so I just put TC bladders in them and issues solved. Reliable and very smooth, and competitive. Mayfield's 2009 Cactus Classic set up works good on the B4.1 and with a MM PRO and 13.5 ballistic it's really good.