trans sleeve question

[BIGJOE]

im reading all these posts about trans sleeves and what problems they cause, i think it could be causing my shifting problem how do i go about fixing the issue or getting a new one, i searched some websites and found nothing under trans sleeve, is it called something else. thanks for all the help again

 

[SSedan64]

This it?
Throttle Valve Sleeve Kit / TV Plunger & Sleeve, 3-sizes.
http://www.sonnax.com/product-lines/high-performance-transmission/parts/1987
More Info >> http://www.sonnax.com/system/announcement/65754-03K.pdf

 

[BIGJOE]

thanks for that