Hi everybody. Need some advice on a 201 engine. 1st a little history. Tractor has 6000+ hrs. Since day 1 has had a lot of blow by, will run hot when pushed hard in hot weather and oil will turn black in a few hrs. Oil and filter changed every 100 hrs and always had conditioner in coolant. Last 2-3 yrs will burn a quart between changes. Will start fine when cold but is very hard starting when hot. Ran a compression test today with a good strong battery. #1&2 300 psi. #3 280. Add a little oil #1&2 jumped to 340 psi. #3 320. Haven't done leak down test yet. Don't know what specs are. Whats the verdict, are those numbers too low? Thanks in advance for the help. MHG