I am always playing around with strings. I recently acquired a 1983 JV Precision with La Bella standard gauge flats (45-105) on and love these strings. So I thought I'd buy a set for my JV Jazz ... and they don't play anything like as nicely (tension feels different, can't get action as low as I can with lighter gauge Joe Osborn flats).
Why is this so? A Fender BBOT bridge is a Fender BBOT of bridge, the scale length is the same 34", the after-lengths to tuners are near identical so the only difference is the spacing of the strings. Is it psychological, to do with the strings feeling more crowded due to string spacing? Dunno. Either way, I took them off and put back on the Joe Osborn flats which suit my Jazz much better. I have also found this in the past with other strings (eg TI Flats and Ernie Ball nickel rounds)
Just seems odd. Oh and I am bored