PCjr - Racore Drive Two Plus (Model 1501 w/DMA)

[oneadamtwelve]

I seem to be running into an issue using a Gotek (SFRC922D) with FlashFloppy (3.27) on a PCjr with a Racore Drive Two Plus with DMA. On a stock configuration with the original floppy controller and 128K RAM, the Gotek works great. However, with the Racore installed, I find most of what I try to boot fails, and it certainly won't boot into DOS (Disk Boot failure).

Has anyone here ever ran into the same issue? I'm kinda new to the scene, but so far all indications point to the Racore fundamentally working different enough to cause issues with the Gotek. Any advice is appreciated!