Midisport Indicates Midi Issues Likely Caused BY MOTU Drivers

It appears that the firewire drivers for Windows 7 64 bit have not fixed midi issues.  Stuck, missing and erroneous midi notes occur in my Yamaha MO 8 keyboard and TC Helicon Voiceworks using TI chip regardless of the combination of drivers I use at any buffer size smaller than 1024 for Ultralite mk3.  Audio issues occur unless the buffer is at least 256 samples.  These issues occur whether I use the 3.6.8.1410 or most recent drivers, and whether I use the latest Win, TI or legacy firewire card driver.  Last Friday M Audio finally issued Win 7 64 bit drivers (beta) for the Midisport series and I connected my old 2x2.  Now my system runs perfectly at a 64 bit buffer sample size.


What do you think, does this prove the bug is in the MOTU Win 7 64 bit driver?  I posted a Tech Note to MOTU Sunday that has not yet been read, and will report any response.