Tealios are linear and they come in only one weight - 67g. I've read somewhere that MX RED bottoms out at 55-60g, so SPRiT 62g would be a tad harder spring sitting in between MX Red and 67g Tealio right? I think I'll go for it. Now I have to determine what kind of springs are in MX Blue and order a set of SPRiT for it as well.