Don't sweat about the number of decimals. The scanner will handle this just fine, unless the signal is weak or marginal.
If I'm reading the SAFE-T database entry correctly, this is a Motorola system, mixed analog and digital talkgroups. Almost all the Floyd County talkgroups are digital except New Albany - the PRO-92 won't handle it (see the 'D' in the MODE column?).
I will defer to Indiana scannists to recommend a replacement - as it does seem that's the way to go here - but as this is a RS forum, I'll point out that there are 3 newer digital compatible scanners, and 2 older ones; their wiki pages are listed below (anything in blue is a link)
Pro-106 - The RadioReference Wiki
Pro-197 - The RadioReference Wiki
Pro-18 - The RadioReference Wiki
Pro-2096 - The RadioReference Wiki
Pro-96 - The RadioReference Wiki
And our RS related help page
Programming Your Radio Shack Scanner - The RadioReference Wiki
Indiana folks, I cede the floor to you...Mike