Have you tried a different boost pedal? For the type of sound you're looking for, I think most people will tell you to use a TS808 but you might have better luck with a different one. I've had really good luck with the super OD particularly with the das metal model, so I can't guarantee it will translate well with a 5150, but you never know. Notice the super OD at default has the low cut set really low, so an alternative you could try is to use a TS but just dial down the low cut. Good luck!
