As the titles suggest, can any hooben heferlump owner please advise me as to wether it is worth while upgrading
the gearbox/motors that come with it,
They look pretty good but I have red that some feel that they are worth replacing.
I am looking to get a slow but powerful set up. say 5/1 gearing.
what can you please advise.
Many thanks.
Cheers Wads.

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