Lovatts Stinker 138

Hi fellow puzzlers, need some help to finish
67a Engraves = I?C?SES (7 )crossed with 55d trIage, 48d outCrop, 68d Sauropod, 38d slovEn, 69d Studio
smithy
257a Opportunist = ?H?N?ER (7) crossed with
246d ginger root = RA?S
212d Montebank = charlataN, 258d Enemies, 248d ecRu
246d (as above)
265d Fanciful conception = CHI?E?A (I think this may be CHIMERA)

Thanks
cheers