I would recommend to never increase tire pressures beyond factory spec. Some LD riders that do a lot of freeway straights may be OK (especially with good loads on) and see extended fuel economy, but typical day to day or sport riding in the twisties it can be down right dangerous (especially in cooler climates).

Ever go to a track-day and see people drop like flies first session running street pressures? I have, 6 went down that day -all forgot to lower their air pressures for the track. Think about that.

Cupping front tires are a reality of heavier bikes with good and used-well brakes. Even the little (by FJR standards) VFR800 cups it's front for all but the most timid riders.

It's a reality, accept it, buy some new rubber and start over.

Not all tires are the same however. Some tread patterns and compound combinations work better than others. Best you can do is ask people who ride like you on a bike like yours what tires they used and if they cup. I had bad cupping on Bridgestone Battlax (sp?), worse on Dunlop D204 and none on Avon Azaro I or II.

Try a higher mile, harder compound touring tire that is less sporty if you have to, but run proper tire pressures +/- 2psi, at 4psi off the mark you need to add/remove air. Traction and mileage have always been at odds and compromises need to be made. Sporty tires don't always die bald, many die a crippled and cupped death -that reduces their useable mileage, a trade off many make for good traction.

Pump up your tires and take your chances to save a couple of bucks on tires if you like -but I wouldn't.