Suffolk Machine is where I get my bands, they provide a wide selection of bands, and made to any length you need. An option is to fit on a 3/4" new band, as a replacement for the 1-1/4" you run now. I would try that and not round the back of the band, or you could also round the back of the 3/4" band, too. Maybe have more set in the band as well, .090 set.
http://suffolkmachinery.com/
