Cosmid Transformation

[Ned Powell]

Dear anyone,
		
I am currently having some problems with tranforming my cosmid,
it is a 12kb cosmid with an insert of 30kb high GC DNA. It is 
currently maintained in E.coli PMC107 (multiple rec mutant) which 
gives v.low yeilds of DNA, hence I am trying to tranform into 
E.coli M15. There is no problem with the competent cells as the 
controls all transform fine (controls inlude vector without insert). 
I have tried using DNA from a variety of extractions including 
wizard minipreps but so far nothing works. Can anybody suggest 
possible solutions?

Thanks very much,

Ned.