Keeping amps doesn't cost anything. Buying an amp you used to have cost more than you sold yours for, every time! Unless you hate one of them, keep them both.
I used GT power tubes and a Ruby pi tube in my 3203 head. Works way better than the Mesa tubes that were in it. It used to squeel at higher gain settings, but now I can dial everything to 10 and stay quiet.
With the bass and treble at 2:00, it sounds quite close to the tube screamer. The bonus is the extra lows and highs you can dial in. Bass at full gets a little overbearing, but back it off just a little and it sounds awsome.
Also, it works well with the gain turned off as a clean boost. 11:30...
The thing that throws me is how it breaks up so early. If it were the speakers you would expect the opposite. I would be suspicious of a preamp tube. If you have any extras, try trading them out one at a time.
The thing about Traynor amps is back in the day, nobody respected someone who copied Marshall. Now, everybody does it. Those old amps love pedals and are very reliable. A multi-effects board will give you any sound you want and the amp will take as much gain as you can throw at it.
Expect...
The Artist 4203 is a 30 watt hybrid combo and does a reasonable JCM immatation. It's a little simple on controls, but it doesn't weigh anything. The head is the 3203.
First, using 2 cabs of equal ohms is important. I believe a 1960 is 16 ohms. Mixing a 16 and an 8 would make an unbalanced load and hurt your amp. Two 16 ohm cabs would make 8. Two 8 ohm cabs would make 4. Now alot of guys will tell you 4 ohms isn't any louder, but adding more speakers moves...