After letting it sit a week or so (it seems it has rained all but about 3 or 4 days since I took delivery 4 weeks ago, what a bummer) I used it for about 3 hours of loader work and did some tests at various rpm. Fortunately, it was not as slow raising as before, but I did discover a few things I had not known about this loader.
Don't know what others have experienced with theirs, but rollback, dump and lower on my L3130 are not adversely affected by rpms between 1500 and 2700. By that, I mean while they are a little slower at the lower rpm, it adds perhaps one second to the function, not enough to send shivers up my spine that I tore something up on my new tractor.
I'm guessing because of the bigger cylinder, lifting the bucket from the ground to full height is very much affected by the rpm variance. While mercifully I could not replicate the 12 second lift time that unnerved me originally, if I dropped it all the way to slow idle (900rpm), it took 10 seconds to raise and did not come close to the advertised 3.3 seconds until it was running at pto rpms (2700). Even at 2000 rpms it lifted slowly).
Probably the cylinder size on the lift causes this, but it freaked this newbie out. The tractor now has 14 hours total, and about 9 of that is loading. If only it would stop raining. I have 250 tons of dense grade gravel scheduled for delivery tomorrow to top my 1500' drive way, so I should get some more seat time then. Thank you for your comments.