Paint not feeling smooth but rough in places

[dev2017]

hi,

on my focus ST3 I had diamond brite paint protection when I bought it. Ive not bee impressed with it from day one. However the other day I notice the paint work on all my car has a rough feeling instead of smooth like it used to be. Only the bottom half of the doors are smooth now and not sure how this has come about.
The car did go into the garage for a replacement front wheel arm and I did notice this rough feeling when it came out of the garage. But may be a coincidence? as they are adamant they wouldn't have touched the body work.

Any advice?

thanks

[dev2017]

thanks all.

whats the process to follow after clay baring the car? does some sort of sealant need to go on next then polish and wax? as I do have some swirls to remove also with my DA.

any recommendations on a clay bar and clay bar lubricant to use? the car is only about 5 months old.

also can I follow the clay bar procedure on my alloys? I have the same problem with the roughness

thanks

Edited by dev2017 on Monday 1st January 20:51

[dev2017]

thanks guys