Oh yeah, I'm a 4 stroke fan myself, in fact, all I own are 4 strokes (5) of them so far. Anyhow, when I bought my Twist I also ordered a TT.61 to match it up with, but, I'm not considering the Mag .70RFS simply for weights and balance purposes. What I want for the end result is to not add any weight up front as I understand the Twist comes out tail heavy. I would rather have engine weight rather than lead weight. I guess I could probably return the 61 (2) stroke and buy the 70 (4) stroke.