The gears are in excellent condition, I took them apart last week (as I do for many years with my retracts) and cleaned them thoroughly. I tested each cylinder, changed one o'ring and lubricated them, no leaks, no bent strut, perfect working condition.
As for been the 150HD, I went back on Robart and they are the 150 without the HD,
They are 95 degrees and not 100, the length is 7-21/32" (195 mm), while the 150HD are 8" (203.2 mm)
https://cdn.shopify.com/s/files/1/03...0_DIM.PDF?4383
I will correct the post to reflect the findings
Best regards,
Bruno