"final" Bulb In Parallel Circuit Brighter Than Rest. Why?

In a previous thread (Wire suitable for underwater usage), I enquired about what cord types would be suitable for underwater usage because I was building a submersible fishing light to attract baitfish.  Well, the light is done, and the bulb "farthest away" from the battery is by far the brightest in the chain (I hesitate to say chain since they are wired in parallel). 



Attached image "photo 1" is a picture of the light I made.  Notice the bulb all the way to the left is far brighter than the rest.



All bulbs used are the same spec, and look like this:



To wire the bulbs, I cut the flange off with a Dremel tool so that they would fit in the tube.  Two pair of them have their terminals soldered together (neg to neg, pos to pos...that's the "gap" you see in the lighting), and the first bulb in line is upside down, with it's terminals facing the incoming wiring.  The first bulb receives the wiring from the main line, then hookup wire is used to jump from those terminals to the next set, etc. 



There IS one anomaly with the final/far left bulb.  When I was cutting off the flange, I accidentally cut too far on that piece, basically severing the terminals from the bulb.  So, when wiring it into the circuit, I had to improvise and soldered the hookup wire directly into the solder points located on the bulb itself (instead of the underside).  Hopefully you can see what I'm talking about in attached "photo 2."



I have no idea why this anomaly would make the bulb brighter though.  Can anyone think of any other reason the bulb would be brighter?  Unfortunately, I cannot do any readings on the individual bulbs because I did not notice this until everything was soldered into place and the lamp sealed/waterproofed).
      


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