Wow, thanks for the flood of helpful replies.
I've decided not to rush into any changes concerning the 430, for all the good reasons you've touched on.
The aftermarket replacement pickup situation with the Fly is not promising, judging from the Parker forums I visited. The pickups are specially designed for it and there are few ways to go that don't involve body work, and I definitely wouldn't want to have to make irreversible changes to it. So that's one big stopping point for me. Mike is right on to point out the pitfalls of that game. Then there's the Parker styling, too, which is not a big plus for me although by itself is not a deal killer, but combined with the sonic issues it does put me off the trail. So if and when I get a Fly I think it should be the Bronze Fly model which has no mag pickups at all.
The 430, as I said, already has the tone I love and a neck which is very agreeable to my hand. Those two things far outweigh the weight consideration which is something I can "work around" (sit on a stool, trade off for short spells with other guitars, get a better strap, or even carry the weight on my hips as I once did with my old Ripper bass). Where there's a will there's a way. I'm not completely gimpy yet.
Those are the important things to me at this point. A little optimism will tell me that someday I will be able to have my cake and eat it too, in other words with some patience I will afford to have a Parker without losing one of my good Ricks. There is absolutely no urgency to get a replacement at this point. The only reason I considered the trade was because it was a possibility to do so, and that's finally not compelling enough of a reason.
Last night I played my 430 for a long time and finally just decided, "no way". It is such a cool guitar, somewhat rare, too, and very different from my other Ricks.
So that's where it stands and that's my final decision for the indefinite future. Thanks a million to all who participated; it's been a very interesting and stimulating conversation.
