Precision Industries triple disc lockup stall converter

been in my 03 Cobra / 4r70w for 2 seasons now. put about 1k miles on it and maybe 60-70 track passes last year. this year i got about 500 miles on it and 50-60 passes and it was sent back to PI for a stall change. they said it looked great and i ut it back in the car 2 weeks ago. looking to pull it out and go more aggressive. these are $900+ new. $600 takes it

oh and on my motor it stalls at 4k