Speech Issue. Didn't find any problem.

I am 24 years old male...I can't pronounce some of letters like R and L clearly...Every time when I pronounce R It sounds like mixture of R and L...My right side of tongue tip doesn't touch soft palate at all...so air is not blocked by it for raspy pronunciation of letters...there is no problem with my left side of tongue working properly...I can't understand what's the problem?...when I checked my mouth...I felt that my right side of palatoglossal muscles are weak n not normal as compared to left side and also right side palatopharyngeal arch is small as compared to left...there is no pain in my throat at all...but I feel some uneasy on right side..I always feel vibrations of voice much on left side than my right side...when I consulted ENT he told me to open my mouth n checked he didn't find any problem..I know this not major problem or can be perception of mine but I really want to get resolve this..I want to do something in vocal music so I am asking this pls resolve this...