Forks rarely leak in the garage. The leak starts when you are riding and pumping fluid up and down, getting it warm. Had you performed a complete inspection before departing it is very likely you would have found nothing amiss.
As for tires, the Pirelli Angel GTs are good, the -2 and the A-spec. But the only tire I would want less than a Michelin Pilot 5 is a Shinko 016.
Am very surprised at how sickenly happy I am with a Bridgestone T31 GT on front and PR4GT on rear. This combination occurred by accident when my rear T31 developed a leak that I couldn't repair. And I'm too cheap to throw away a perfectly good front T31 when it had half its tread remaining. A new PR4GT front is waiting.
The Bridgestone T30 and T31 are perhaps the best value tires for FJR today. Maybe 75% the life of PR4GT at 2/3 cost. Your cost to mount might tip cost-per-mile in favor of PR4, math required. My T31 GT front is riding sweet right to the cords, no matter the scalloping which can not be avoided.
2018 F-150 XLT SuperCab 4x4 2.7L
2016 Beta 430 RS
2016 Subaru Outback
2013 Tesla Model S 85
2009 Husaberg FE450
1983 Porsche 928S