You are going to have to unless you change the libraries. Just remember that any PAUSE commands will be 8.5% longer than you think.
You can get around that by creating some variables.

For example: If your program needed 3 different delays 20ms, 50ms, 190ms
You would create 3 vars

delay20 con 18
delay50 con 46
delay190 con 175

Now, if you need a 20mSec delay, you can use the command

PAUSE delay20

It is not exact, but it is close.