Thanks for your replies, the 1.15ohm coil is MTL Clapton Nichrome 80, six wraps not spaced, and the 0.4ohm coil is SS, six wraps non spaced. It’s weird because after I wrote the post, I was messing around with coils, and it seems anything up to 0.7ohms works fine in replay, but go above that, and I don’t get the Save option. The Nichrome 80 coil seemed to work fine in TC. Right now I’ve got the 0.7 in there working Replay mode fine, so I’ll check the resistances next time I change the coils. Thanks to you both for your help.