Rick, you don't give any dates (maybe best not to on a public forum!) but there are a number of festivals coming up, at which there should be plenty of sessions:
Newcastleton (Borders) first weekend in July
Stonehaven (a wee bit S of Aberdeen) 8th-11th July
Hebridean Celtic (Stornoway, Outer Hebrides) 14th-17th July
Rolling Hills (Melrose, Borders) 23rd-25th July
Falkland Big Tent (Fife) - same weekend
Lomond (Balloch, S end of Loch Lomond) 30th July -1st August
Auchtermuchty (Fife) 13th-15th August
Innerleithen (Borders) 20th-22nd August
Kirriemuir (Angus) 3rd -5th September
Linlithgow (15 miles W of Edinburgh) 8th-12th September
Douglasdale (west centrql lowlands) 17th-19th September
Jura (inner Hebrides)24th-26th September

Pretty well all of these have their own websites, so a quick Google will get you the details.

Also I believe there is a monthly session at a pub somewhere up in Glen Trool Galloway forest) with Jim Bainbridge.

Good luck!