Hi Kyle !!
I've been using driver 51 for a long time without issue, 57600 baud rate, 94h address, 2 stop bits, check POLL and OL. I run multiple Icoms, 7610 [driver 50], 7300 [driver 51], 9700 [driver 48], and 705 [driver 58] concurrently with no problems. See my QRZ page for more details if needed. Driver 48 should work as well.
73,
Brad K8ZM