Liquid with wax blobs at the top

[L Yu]

Hi everyone, wondering if anyone has advice what this liquid is that is accumulating on the top of my lamp after a few hours of operation.  It appears clear with lumps of wax inside.  This is a 1977 lamp that I recently changed the water (distilled) and used glycerine to get the wax moving.  I’ve removed some of this liquid with a syringe and it appeared to be wax so I put it back in.   Disappears when the lamp cools down when turned off.   I thought it may have been glycerine but it is not.   It recently appeared after a few days of cycling after the water change. Please see photo below.  

[Zapiao]

My friend all my lamps do that when running. It is normal.

[Claude J]

it is the glycerine that is not mixing with the wax 

[L Yu]

Do you think the glycerine is degrading the wax and breaking it up? Should I be concerned? The lamp is finally flowing nicely with this water change, except for this. ( I have kept the original water just in case this change did not work) Thanks for your help!

[Claude J]

it working like most lamps some at the top, the rest flowing."
I wouldn't be concerned