Finally, I found the time to snap pics of the VF-1D 'issue':
if you can see the pics above, the plastic stubs on top of the intake seemed a bit deformed...tiny bits broke off after I managed to remove the legs from the pegs...
Upon closer inspection on the metal plates, reveal:
....on the lower edges of the peg hole, I noticed the surface is uneven. At first I thought it was the excess paint, but after trying to scratch it off, found out that it was part of the metal plate itself!
Two course of action here, file off the edge or file off the plastic stubs...and since I only have a plastic filer on hand, I filed the edges of the tabs just a teeny bit.
And now, I can transform my VF-1D AS PER INSTRUCTION......