I believe they were 11-49 before, but I may be wrong. Whatever Musicians Friend uses haha. I have an Ibanez RG2EX1 and I switched to 12-56. There was a huge difference! I've fallen back in love with my guitar. It's great
R.I.P. Ronnie James Dio. Supplied amazing music to both me and my mother.

He will be missed.
k, koo
But seriously I had a similar experience over a year ago and i've been using the same strings ever since.
92% percent of the teen population would be dead if Hollywood said it wasn't cool to breathe anymore.
Put this in your signature if you are one of the 92% who wouldn't be breathing.
i use heavier strings on my Les Paul but only because of drop tuning.
also i dunno if it's just the brand, but they seem to last longer than they used to.
Yeah, I love having decent sized strings on my guitar. Better tone (IMO <- important), stronger grip, less slip.
Nice! I think usual stock strings are 9s or 10s, 11s sounds a bit too heavy for stock strings.

But I could be wrong.

Have you checked to make sure your intonation and neck tension is set correctly?