727 Transmission showing signs i need to get it in the shop, need a shop recommendation in Coachella Valley area

I inherited this trans is in my 67 Dart and it has performed well up until yesterday. The trans normally shifts at 2000 rpm like clock work and always has since i got the car here in So Cal.

Yesterday I was driving home and had a stop light; when i started back up the shift from first to second was normal, right at 2000 rpm, but when it should have shifted from second to third, it didn't. At about 2500 rpm it up shifted to third and then immediately wanted to downshift back to second. It did go back into third and i got it home no problem. Also, it was the first hot day we've had this year and was mid 90's when this happened. When i got home I checked the trans fluid and it was at the right level and smelled and looked right, no burning or anything like that.

Dont want to do anymore damage and wanted to ask the forum if they could recommend a transmission shop here in Coachella Valley. There are alot of trans shops in and around Indio which would be a good location as it's fairly close to my house.

If you know a good one please let me know, alternatively if you know one to stay away from let me know that too.