Problem converting OpenType (PS) to Type 1

Hi

I have recently bought Adobe Garamond Pro as an OpenType font with Postscript outlines direct from Adobe. It seems to work well and can be converted fine with TransType PRO on my mac to PC Truetype format. However when I try to convert it to PC Type 1 format it seems to go wrong.

The conversion completes fine but when I preview the font that is created by dragging it into the source font side of TransType, it appears corrupted - some letters in the alphabet appear superscripted. It seems to be consistent - all the e's, b's and m's are superscript in Garamond Pro. This happens with other fonts too, but not all fonts are affected, and different letters in each font.

I want to use the Type 1 font that is produced with OS/2 (I know, ancient, sorry) and when I install it on the OS/2 box, the characters appear superscripted there too - it is quite unusable. I don't suspect the problem is with OS/2 as the corruption seems to appear in the TransType previewer before it even gets to the OS/2 box.

I've tried various combinations of settings and it doesn't seem to make any difference.

Can you help?

Many thanks.