Why is it that i cannot get a R/X crystal from the LHS i have tried all of them that are in my area but none of them keep them instock. i even tried to buy a new receiver just so i could get one. all i want is one on either channel 19, 21, 29 or 31. is it just that they dont sell many of them so its not worth keeping them in stock? i would order one from futaba or tower hobbies but i want to fly this weekend and if i ordered now i would not get it until next week. just thought i would vent some frustration