the tube is way to tight.. what should i do?.. what would the workers at hobby shops do?
First straighten the wire, pull it between 2 fingers, then lube the wire most recommend baby powder but I have always used bearing oil. One drop between 2 fingers slide them up the wire. Then it'll slide right in.
spray glass cleaner in the tube and the antenna will slide in easily
Plastic often gets soft when warmed. But be carefull not to overheat nor to tear it when you force the antenna through. Patience is the most needed 'tool'. To warm the tube, when it is still un-attached, try dipping it in lukewarm water, keeping the ends out to avoid water getting in. If it is working but not enough, take a second 'bath' a little warmer. If the tube is already in place, try a blow-dryer, on low heat and only a few seconds as first. Lengthen the time if it is not enough. Be carefull about heating the model, as parts are often glued with hot-glue and might get unstuck if to warm.