Just wanted to say you were right brother, thanks for the reassurance! The encouragement from you and knowledge that it can take quite a while to perfect, really helped make it less stressful and frustrating for me and also gave me motivation to try again. I flattened out the muscle memory a bit for an hour or two today, and now I feel like I've really got a grip on the (21xxFBC s4xxTP) cancel, and I'm now at a point where I can land a couple of BnBs (214xxTP, 21xxChain, FjP F4xxFA, 21xxFBC s4xxTP + JiKxxTP, 21xxChain, FjP F4xxFA, 21xxFBC s4xxTP) multiple times in a row! Still a bit awkward and I flub the muscle memory every now and again and do something random, but the more I do it, the more natural it becomes, a month or so of doing it and I'm sure it will be second nature. I'm now the opposite of disheartened as I feel that if I can get this, I can definitely get the rest of the character, there is definitely a heavy execution barrier here, but it'll be worth it.
Sorry if I've derailed your thread Trip, great thread by the way and this explanation is what got me to pick up Scorp, this is exactly what I'm looking for in a character.