Never heard that single coil pickups more feedback than humbuckers. What can be a contributing factor is the way your pickups are mounted. Pickups suspended in the pickguard of a Strat would more easily pick up vibration compared to body mounted pickups.@Sashman
@Jeronimo
@Greg Ferguson
The custom preset creator told me single coils are my problem with the G&R sound. Single coils for eg. on a strat produce feedback and squeal.
I can't post custom presets. There is no drive model. Only amp and cab...
The easiest solution he said is to play Slash on a Les Paul. You need the proper sustain. The strat can't produce that sweet sustain sound of the Les Paul as effectively, even with the great AX8 presets dialed in.
Kinda common sense.
I tried turning the amp's DB output volume down a lot and the Input gain amount down a lot but it didn't help much. Still feedback and squeal.
Also it's not 60 cycle hum. Even on PU position 2 and 4 I get some white noise from the speakers which is due to the 800 #34 amp model he uses to create Slash's sound.
I may just buy me a Les Paul next. Looking into either a NEW Tribute (I think these used to be called Studio) or a USED Standard. Roughly, the same cost. Which would you buy?
For playing Slash’s style a LP would of course be a great choice. Go to a store and play as many different ones and hope there is one you will like enough for buying. A used standard is always a safe choice as it will most likely keep its value.
Two years ago I bought a beautiful used LP standards Honey Burst but I ended up selling because I could not bond with the guitar. Sold it a year ago for the same amount.
Again: try before you buy!