Hi Anglinarcher, I totally agree with you on Colorado blades, they are my go to blades in the rivers I fish here in New Zealand. I mostly use size 3, occasionally size 2 but recently bought some size 1 blades to try out and I'm struggling to get them to spin well. I've been slowly reducing weight on my test models , removing one tungsten bead at a time, suspecting that this might be the main problem and am down to around 2g now. (se jpg) They do spin but not very well and only very very slowly when they do. I was wondering what weight profile you use? I would really appreciate any insight you may have. Many thanks.