Format Data from A & D Scales into mobile Device

[GrindEspresso]

Hi,

I have a set of scales with an RS232 interface that I'm trying to read data from via a bluetooth serial dongle (parani SD1000) into an application running on a mobile device (windows mobile 6.1). Everything works fine except the data received has some chars from the extended ASCII set and I am unable to format them to the values sent from the scales.
The scales sends 7 bit even parity data which then passes through the dongle which handles 8 bit no parity data. I've tried all manner of encoding to try and get the correct data into the app but no luck.

The scales sends a 17 byte packet which looks like...ST,+00000.00_kgCrLf what I'm getting back is S??+0000?.96????Cr which is close but no cigar. I've tried all the different encoding formats but none give the correct data.

I have connected the scales to my laptop and used HyperTerm to analyse the data (w/o the parani). At first I was using 8 bit data in HT and the data displayed was not correct but once I change HT to 7 bit data the data was received and displayed correctly. I'm not sure where the problem is. It must be a formatting problem as its just a stream of bits that come from the scales and just pass through the parani and you would think that all is required is the formatting on the CF device.

What am I missing? Any help would be greatly appreciated.