welcome pearl jam..looking forward to hearing your views on these systems.
XMC-1 DIRAC Full; Oppo 105/Roku Ultra to Panny AE4000 w/106" screen; UltraRendu to LH Labs Geek Pulse X-Infinity; nCore nc400's or Prima Luna Premium Prologue to Maggie 1.7's; Rythmik F25; XPA-5 to CC-470v3 Center/ERD-1's; Thorens TD166 MkII/Denon DL207/XPS-1; 5-zone Sonos w/Def Tech AW5500's @ deck/pool/master bath & Sony SS-MB105/Polk R10 @ great room & kitchen. Two headphone setups: Hifiberry/BasX A100 and Allo BOSS/Schiit Asgard 2 (each to Senn 600's). PC w/Airmotiv 3b's. Roon user.
One thing I can say so far is that I also experienced it very difficult getting the banana plugs into the posts
while i didn't have the problems you mentioned having with getting your banana plugs into the post, the other way of thinking about it is you probably won't have to worry about them falling out or loosening up as far as the jacks are concerned
I have both an XPA-5 & a UPA-2 and have no problems with the speaker post. I hope that wil turn out to be the extent of your complaints/troubles with the unit.
55" Sony SXRD KDS-A552000 1080P TCL55P605 & TCL49S405 PS3 Oppo BDP 105D,105,for Blu-Ray/SACD/DVD-A, Philips for UHD/HDR APC UPS w/AVR; Emotiva XSP-1, XPA-5, UPA-2, UPA-700/200 & Mini X Amp,X-REF 12 Sub; iFi nano iDSD DAC & iUSB Power supply; Marantz AV7702MKII Pre-Amp & NR1607 receiver, Harmony 1 Polk Audio: Vintage SDA-2 Speaker System & Monitor 10A & 5A Axiom M80v3 L&R,VP180v3 C, QS8v3 S L&R, SB L&R, LCR Bi-Wired, Pro-Ject Debut TT NY GIANTS!