cryptic 59

thanks to mrsgreen and farkha for helping me to finish the stinker.

I now need a little help with the cryptic please, I was stuck on 15a and have just looked at some of the other postings, and found the answer to be 'initiating' I thought it might have been 'originating', but could not get it to fit
this perplexes me slightly, my answer for 1a was recaped, but this now appears to be wrong, recaped as in puts the top back on, and at the moment I cannot come up with any words starting with j.

How do I remove my previous postings, I thought the machine removed them after a period of time, but I can still access them. Thanks