Modern PVC or aluminum tubing cut to the same length and bend profile works. Keep the original end caps.
Assembling the Neva-3 involves a specific sequence to ensure the PVC skin is properly tensioned over the internal metal frame. 1. Preparation and Shell Layout
Check lower stringers – one may have popped out of its frame notch. Also, check for unequal skin tension.
Если вы собираете байдарку в ветреную погоду, придавите края кожуха чем-нибудь тяжелым или попросите напарника придерживать его.
Here is your step-by-step (instruction) to get this beauty watertight.