I was there! They've all but eliminated 250's in US these days, just regional racing, but I loved them at Daytona. We used to get a few odd bods come over, apart from the aforementioned Aaron Slight. I know I saw Chas Mortimer and John McGuinness in the latter years, and we'd always get a few South Americans trying to beat the locals and make a bit of money, withouta lot of success, I might add.
RIP AMA 250 class.
Cheers
Barry