lovatts holiday 92 crack the cryptic

Struggling big time with this issue any help would be greatly appreciated
5a European representatives of the no swearing reform (10) ???????a??
12a one who spies for a lark, perhaps (11) ?I?????????
17a cruel heat starts nasty rash (5) e????
21a band of desert merchants in a mobile home (7) ?l?????
22a potter is a pot mender (6) would this be tinker?
35a graph showing changes in each trip (3,5) ?I??a?? 40a refuse to secretly record irresponsible pickniker (9) ??t???b??
73a type of fishing, ted, that's firmly established (4,6) d?????r?e?
31d theatre employee or wells fargo worker (9) ?????????
56d view prarie, they say, from amphibious aircraft(8) ?e???a??
Many Thanks Sorry I know there a quite a few
Carole