Bud,
I think you could add more sparkaloid without any problems, but after 2 tries, I doubt it would help. You can try the superkleer, but did you remember to add the pectic enzime when you made the wine? Think pear has pretty high pectin and that could give you a haze. Is it completely degassed? If not that will keep some solids in suspension. And make sure it is warm enough when degassing. Maybe a little bentonite will take it out also. In the same breath, I had a batch of strawberry, tried spark. and superkleer. Degassed, didn't think to try the pectin or bentonite. Finally bottled it and a couple days later all the sediment fell out. Quit worrying about it, shake every bottle a little, I don't see much sediment in the wine and drink it. Tastes good, and if I drink it myself, doesn't really matter if it has a little sediment. Got a new batch started, will make sure this is clear before bottling. Going to put the f-pac in early this time. That is where the sediment came from. But I let it sit for almost a year and it still had that sediment. Good luck with it, Arne.