I have seen this topic a few times on this forum recently. Also, the Hobie Cat website has a FAQ about tell tails that will go into more detail.
I'll take a stab at the problems you are describing. If I'm wrong I know someone will correct me.
In light air my leach telltales are not flying. The leach are constantly bending around to leeward but the leeward side of the telltales in the middle are doing fine.
I think you need to sheet out some more. It sounds like you are pinching. On the larger mono's I sail that don't have tell tails we sheet out until the sail luffs then sheet it in just past the point where it stops. You want a fat sail in light air with a high angle of attack.
In heavy air my leech telltales flow like crazy. I can't even sheet and downhaul enough to make them stop. But while the leech are flowing like crazy my leeward telltale on my main in the H panel doesn't fly.
I can't quite picture what you are saying but I think you may have the jib sheeted in too much and are choking the mainsail. That's my best guess
I'm not positive where all the tell tails are placed on a Tiger. Someone with more Tiger experience will coorect me if I'm wrong.
