The spoke sealing, no new wheels from warranty, maybe a few new seals. I have a nice manual from Guzzi how to fit them. Mine do not lek, no additional air between new tyres
First lines from that:
1) We do not recommend cleaning the wheel with high pressure cleaning systems, whether hot
or cold water is used.
If you do intend to use a high pressure cleaning system, keep the jet nozzle
at least 50 cm from the area in which the nipple passes through the rim (see Pos. 30 in Fig.
20).
Bringing the jet too close to the nipple may force dirt between the nipple itself and the rim,
compromising the air tightness of the assembly and damaging the seal.