Switch From Equal Length Shortys to Full Length?

I think, as you said, at this point, it is a waste of money and time.

I just did the very same thing you did, switching from equal lengths to longtubes. I noticed nothing significant enough to really warrant buying them. On a 302/306, the only reason I would get them is for sound (I like the sound better) or if you want every little bitty bit off of your time...

IMO, it isn't worth it for what you get...