Typing san jose hobby shop in the www.google.com search box returned several results.

A. D & J Hobby & Crafts - www.djhobby.com - (408) 379-1696 - 20 reviews
B. HobbyTown USA - sanjoseca.hobbytown.com - (408) 229-1972 - 4 reviews
C. Rc Unlimited Hobby Shop - www.rcunlimited.net - (408) 377-3771 - 5 reviews
D. Games Workshop Oakridge Mall - www.games-workshop.com - (408) 226-6325 - more
E. California Hobbies LLC - www.california-hobbies.com - (408) 448-1449 - 1 review
F. Train Shop The - www.aawtrains.com - (408) 296-1050 - 3 reviews
G. Sheldons Hobbies - www.sheldonshobbies.com - (408) 946-3801 - 4 reviews
H. Helicopter World Inc - www.heli-world.com - (408) 451-1155 - more
I. Happy Time R'c Hobby - www.happytimehobby.com - (408) 988-1188 - more
J. Sunset Models - www.3rdrail.com - (408) 866-1727 - more

Take your tank with you for comparison and find something that's pretty similar.