A new Leader 722ts Build help?

Ah, that old wives' tale again. If you use a fork with less rake, you actually get slower steering due to the increased trail. However, short of riding otherwise identical bikes back to back, you're unlikely to notice the difference between 30mm and 43mm.

I doubt it. Measure your head tube and add 75mm for a conventional headset or 45mm for integrated headsets to get the practical minimum. Any less than that and you'll be back next week quizzing us about low stack headsets and stems.

Nobody has ever proven a performance difference, and most of the people who claim they can feel a difference are kidding themselves and are proven to be deluded if you swap their cranks without telling them. Shorter cranks increase your gain ratio, all else being equal, so you should reduce your gear ratio and increase you cadence to compensate if you really want to compare like with like.

Once again you've been a veritable fountain of knowledge, your advice is really appreciated. Thank you.

i have a v-sprint peagasus/novatec on the back and it is totally solid.
well worth the money. not light but strong.

i also have a shimano RS20 on the front.
on my second one know but the 1st did thousands of miles and stayed true.
good enough to buy a second.

Glad to hear that, thanks! :)