Hi Steve and welcome to roots chat.
I have struggled to find out much about any of the crew on that minelaying op, the second of my Uncles three ops.
I do know that there was nearly an accident because two aircraft on the same op went off the runway and got bogged down so there was a near miss apparently.
I would say that your best option is to apply for service records, someone on here will have the details you require, if you look at some of the other posts there will be a link somewhere. You need next of kin authority....l just got my Dad to give authority in a letter for me to have the records. It costs £30 but the results are well worth waiting for. Remember to ask for actual photocopies of the records or you just get a summary. I had a great time deciphering all the codes, and the folk on here will undoubtedly help you with any queries.
I only knew the end of my Uncles story but the records told me everything else from when he joined up so go for it!!
As far as the PM thing goes, l believe you have to do a few posts before you can PM anyone. Check the requirements on the welcome page.
Best of luck.........
Steve.