Pars Thanks for the link to RM. I’ve been registered there for a long time, but I didn’t know they were selling the 216. I bought the 216 and 79 on eBay in 2020. I was building a T2 in 2024. But the board didn’t work. Most likely, the 216 and 79 weren’t original. Replacing them with TA004 didn’t help. When RM sends me the old 216 and 79, I’ll try to get this model running again. Right now, I’m happy with the modified version. The boards are from KGSSHV Carbon, but I replaced the C2M1001700 with EL34 tubes.