Help with Archer

Is it just me, or shouldn't this Archer's Short Bow Thac0 = 15 and not 18
Equipped with a Short Bow
Level 1 Archer Base Thac0 = 20
Dex = 19 = -3
Elf = -1
Two points specialization = -1
Total = 15
But the Thac0 that shows on the screen is 18??
Other problem (maybe it's not though) - I can only get two proficiencies at level 1 for my Archer for Short Bows. Why can't put 3 in? Is there a minimum level for get beyond two proficiencies?
Equipped with a Short Bow
Level 1 Archer Base Thac0 = 20
Dex = 19 = -3
Elf = -1
Two points specialization = -1
Total = 15
But the Thac0 that shows on the screen is 18??
Other problem (maybe it's not though) - I can only get two proficiencies at level 1 for my Archer for Short Bows. Why can't put 3 in? Is there a minimum level for get beyond two proficiencies?
0
Comments
I guess you'll find out for sure when you get to level 3.
I was looking forward to my level 1 elf archer with 3 profs in Long Bow, 19 dex, and a Thac0 of 13 (heck actually 12 with a Composite Long Bow) with 5/2 attacks per round. Ah not to be (yet).