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While this is kinda grim I want to advise you against running tires like conti gp5k S TR with tubes because they have so little puncture protection that disintegrate when a sharp edge looks at them. If you want to run tubes I would only run tires that are not designed with sealant doing all the work in mind (normal gp 5k for example) 
t. someone who runs gp5k s tr and had 6 (sealing) punctures in 3k km kek