tpetplyr

One way I've found extremely helpful in increasing the speed of technical passages is to "snap" the line. I find that it's great for parts where I have enough technique but can't wrap my head around the intervals, or the fingerings or something.

Play it once as dotted-16th -- 32nd all the way through. Slowly work your tempo up there. Then repeat as 32nd -- dotted-16th. This will allow you to go 'slowly' but get used to moving quickly between the notes.

Also, slur-two-tongue-two is a common way of playing this. In general, in the Haydn, most of the articulation is up to the performer's (or their tecaher's) determination, just ensure that similar lines are consistent throughout the piece.

Stuart