I've had trouble dealing with TMR. He's clearly doing his best, but it falls short in this day and age of expected customer service.
I ordered sliders for my FS450 knowing they were backordered. I wasn't in a huge rush; they took ~6 months to arrive—just in time for a track day, all good! However, when they arrived, they didn't fit. The nut counterbore was too small.
I had to call him every other day for almost 2 weeks to get him to pick up/return a call. Once he did, he promised and promised and promised to send me a return label so he could get them machined to fit, but since they were anodized and laser engraved after machining, they would not be totally anodized blue after he had the counterbore fixed. Weeks passed and I never got a return label and grew tired of waiting, so I ate the cost of having the slider counterbore machined locally.
I could go on. It's a shit show, but there ain't another player in the game, so we have to deal with the less-than-stellar service. I'd take my money elsewhere, but there is nowhere else to go.