Suzuki: Suzuki Jeep 4x4 Caribean, suzuki caribean, engine cranks

Question
Starting Problems

Starts fine when cold

Won't start after say driving 4 or 5 miles and engine off for 10 - 20 mins

Starts again after being left for 1 hr or so

Battery strong and engine cranks. Has spark

Runs and idols smoothly  

Answer
If it has spark when it doesn't start, then it is most likely fuel.  Next is to determine whether it has not enough, or too much.  Try spraying some carb cleaner into the intake.  If it tries to start, there's not enough if it doesn't there is probably too much.  
I have no idea what a Suzuki Caribean model is, and what it's equivalent is in the US, so I'm giving generalized answers.
scotty