I have been told that certain XL BGE's do not seal well if the present spring assist is utilized. My XL shipped with the second edition of Spring Assist which I have removed in order to allow the Guru ProCom to work efficiently. I was told a couple of months ago by calling BGE direct that a new Spring Assembly will be out "in a matter of weeks". I have checked with my retailer who has check with their distributor and I can't seem to get a firm date of release of the newest spring modification for the XL. Anyone on this list have any info on this??