Stuck on these cryptic clues from a 'Lovatts' crossword collection
Any help greatly appreciated
53a Shiatsu service takes a very long time (7)???s???
62a Silky sheath that Ms Chanel has on (6) ???o?n
66a He responds to those who are appealing (5) ??c??
68a"That's what santa rides in" said butcher (4) s?a?
54d Crawl to a group of trees when left behind (6) ????e?
TIa