i think it is stable at 3.8GHz. it was ~52'C the whole way through for 11 hours. Should i take it up to 4GHz?
That's good, temps are acceptable and it's stable.
If you're going to try for 4Ghz then you'll probably need more Vcore again, make sure you stay below 1.55V
Try something alot lower to start off with though, if it doesn't boot in with 1.425V then try 1.435V ETC...