340 xhead spring shimming, height and pocket question(s)

4spdragtop said
Which means machining a bigger pocket and new retainers..
Dammit, they recommended the 942 springs on tech line months back...

If the 942 doesn't coil bind and if the retainer to guide clearance is good, run the 942. The 995 is a dual spring and you're just opening up an unnecessary can of worms there, IMO.