Tough crowd - HA!! pretty good.
Let's see...
Digatron. You're using a cylinder head temp setup. Sorry, I have no experience with those - always used the EGT probe - so I can't tell you what sort of temps you should be seeing.
Reeds - worn = bad. Replace them (I see you're doing that)
Cracked intake BAD! Air leak city. These things can cause you all sorts of problems - including a run away engine that destroys itself.
The best thing to do with jetting is first get the reeds and intake replaced and then start doing plug readings. Once you get the plug readings dialed in then start paying attention to the Digitron and make note of where it seems to run once the engine's tuned. They're a great instrument to use to make sure the engine's running correctly, but the first time of tuning needs to be done the old fashioned, pain in the butt way.
Switch to 32:1 on the oil ratio too - 16 oz to 4 gallons. (I always ran 40:1 - 16 oz to 5 gallons). Don't use Wally World type oils - use a good quality two smoke oil like Maxima, Yamalube or Spectro.
How's the air filter? Don't wash it with gasoline - that destroys them. Use Simple Green or a filter cleaning solution and follow the instructions. Don't over-oil the filter either. Coat it with a spray on filter oil until the whole thing's covered, then work the oil into the filter by squeezing - don't wring it. Once you're done with that, wrap it with a paper towel and then squeeze it again.
Top end speed - is the vehicle just going flat on top end or is it struggling to get there?
Here's a link on how to jet your carb.Thanks Dennis - I fixed it.