Talk to General Surgeon on Igf-1 Still High After Transsphenoidal Pituitary Surgery

I had a transsphenoidal surgery for acromegaly adenoma. My tumor has been removed and my latest MRI shows no further adenoma. but it's been four months my HGH has decreased significantly. It was 50 before surgery and 1.5 after surgery but my igf-1 is still 397. My surgeon and endocrinologist both think I don't need sandostatin at this level. I just want to take opinion of other endocrinologist here too. what do they suggest? is 396 igf-1 safe and it doesn't have any side effects on my organs? can this elevated igf-1 cause tumors if left untreated?