'Help!'

I am new to PICs and need some help

I have written a program to position a target at various positions,
At first I used TMR0 (no pre-scaler) with no problems! (well not many)
However as I needed more accuracy I altered the program to use TMR1
(asynchronous, prescaler 1)
The problem is that each time I write, or clear the counter it does not
appear to count the first pulse after these operations, but in simulation
it does.

any ideas, am I just doing something stupid?


Many thanks


Bob