Paul,
Currently there is no option (default) to change the decimal place and attachment for bend note, however you can use workaround for both, as:
-- To remove trailing zeros
1. Select Bend note in drawing > Right Click > Edit Value > Copy Note from text properties and paste in notepad (e.g. ƒ {1:&benddir__}90.00 $ ) > Remove trailing Zeros > Overwrite note for bend note in Text. Note: This will apply to bend note in part as well.
-- To change the attachment location for Bend note.
1. Select bend Note > Right Click > Edit attachment > Yes on warning > Set appropriate Arrow style (e.g. Arrow Head) > Pick alternate location in bend axis > Done/Return.