Crimping is mainly tedious to do... takes a few to get the hang of it.
I find it easier with a small pair of flat nose pliers rather than a crimping tool

Well I will post up pics as I go & risk the embarrassment (infinite was man enough to air his 1st solder so I'll have a stab). Hopefully I can remove a crispy j121 & end up with a clean still working one. i checked a few youtubes &. have some crimpers so will give them a run. if struggling might try the pliers. will be in a week or two.