Yeah this is all well and good assuming your bow is straight in the first place!
I never measure it, although I do look for symmetry of the lower limb or maybe a tad stiffer.
I once had the esteemed Robert Hardy (who wrote 'Longbow') tell me one of my longbows was built upside down
Maybe I should have bit my tongue, but I popped off the string and showed him the natural deflex in the lower limb
.
I'm not really sure if one limb can really recover much faster than the other, as they are not separate limbs... they join in the middle and the ends are joined by the string ! (Yes really... you've never noticed?)
One limb tip won't stop moving until the string stops it right?
If that tip has stopped, then that end of the string has stopped...right?
If one end of the string has stopped then the other end has also stopped... right?
... and it that string end has stopped the limb tip has stopped too!
So.... both tips stop simultaneously...
Mind, that's not to say the bow hasn't tilted during that time
... but, by then the point of the arrow, with it's nice point stuffed full of inertia is alread on it's way towards the target, and the back of the arrow may waggle a little as it catches up (hey wait for me!).
Does it really matter? How many angels can dance on the point of an arrow as it spins towards the target?
Del