That transfer case boot

[Bowed]

I have a 2000 Silverado K1500 with the auto transfer case . It has a small leak at the front of the case in the area of the front propeller shaft . There is a boot ( picture ) with one clamp. On line info says , some cases had one clamp and other cases had two clamps . I think this must be the two clamp boot and the first clamp is missing . Am I right and is the boot my most likely candidate for the leak ? Thanks .