This is a pretty straight forward vent cleaning.  It had a semirigid attached with a 90 degree angle at the base of the dryer which is slightly slowing down the air velocity.  We also saw that lint is collecting at the top of the vent, so lint is still able to leave the pipe.  We suggested leaving it as is and then checking back in two years to see if it is causing any issues, and if it is, we can address it at that time.