Corners Warping with ABS

Can't seem to get rid of warping completely with ABS. I have chamber at 45 C and have tried 50 C but the corners still warp. Brim doesn't help and I've tried doing a custom brim but still lifts. I've tried glue stick before but I'd rather not use it as it is messy and I have a bl touch probe.

I have bed temp set to 110 and nozzle 255 C to start and then 250 C for the rest. Using textured PEI buildplate.

Idk if there is anything else I can try without using something like a glue stick? If I have to use an extra adhesive, is there something better than a glue stick? I've heard hairspray is also good? I know there are some name brand adhesives but they tend to all be pretty expensive along with added shipping costs.
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