Good gearing for 85-86 250R with 20" tires?

[InPiEcEs]

I'm debating on gearing options on my 86 R, with my 20" Razr's.
Right now, I have 14/36 gearing used with my 18" Trekkers for ice-racing.
I'm running a 38mm PWK with an open K&N, CR cage with Aktive reeds,, an ESR pipe, and stock .020" over engine with mild cleanup porting. I'm thinking of dropping to a 13 tooth front, which will give me 13/36 gearing. I'm thinking this will be an okay all around setup.
What do you all think, and what are you using for what type of riding?

[250rAL]

Unless you need the extra speed, the stock gearing is hard to beat. I've always wanted to try 13/37 but I didn't want to loose the lower gearing for the woods.

[nate b]

I'd go 14/38

[deathman53]

I always used 14/39 for the woods and 20" tires. I now use 14/36, but thats with 18" tires and mx.

[oldsking86]

I'm running 14/39 and my tires are like 19's... I'm running some 20's but on a 10" wide wheel they stretch out