I'm very perplexed by the complaints of "fit". We have customers cars where the fit is absolutely wonderful, and then we hear reports of horrid fit. It's so hit-and-miss, that it's hard to get one's brain wrapped around it
Maybe a combination of things. Could be the expectation that it will lay flat over the entire floors is wrong, maybe that the original quality was worse than one expects, and maybe the repairs... And maybe the opinon of "quality" is a variable, as some think a Maaco type tape-and-spray looks as good as a back-to-bare-metal-hand-rubbed "show car" paint job... different expectations and standards...
On mine (3 cars) the carpet just does not lay flat, or align properly to the wells. It's always a "close as can get". Pull the carpet to the correct position on one rear foot well, aligned to the side (pick one) and rear, the other side is too far in, and the front too far back so if you push on the carpet ther is a void between the metal and the carpet. Not a lot, but noticeable if you look. Poor fit from rocker to rocker, again tight one side, loose the other. Not something one notices opening the door an looking, but very noticeable when installing the sill plates and seats.
The most recent is skewed, on the front seam section, provide a nice even seam at the overlap on seat riser and the line of the carpet along the firewall is 1-2" lower on the RH side thatn the LH. And leaves a 1/2" gap between the kick panle side and the edge of carpet. This is OEM metal, except for less than a half floor at the front of the passenger seat, some light heater spots of rust and a few pinholes repaired, which did not move tunnel, rockers or anythign else... so one could expect it should not impact the fit of the carpet?
I'd try the Raylon in the next one, but need one to match a '68 Ivy Gold, buy sounds like it's not available... :0/