So a few weekends ago I turned a Douglas 'Thinline' into an H-H string through TOM rear-route 'Thinline'. I replaced the nut and trees with Graph Tech and tightened the screw on the tuner knobs, same as I do on all my guitars. I've noticed that everytime I play it the tuning is pretty off (low). None of my other guitars are like that, I might have to do a 1/8 turn to bring it back in tune but that's it.
Is it possible that the string furrels need time to 'set-in' and that's the reason for the dropped tuning?
All the screws are tight and strings are stretched BTW.